According to these SAP notes general GA for Windows Server 2012 is planned for Q2 2013. But customers are welcome to join the FCS right now.

While there will be some restrictions during the FCS when running SAP directly on Windows Server 2012 there are no limitations in using WS2012 Hyper-V in combination with Windows 2008 ( R2 ) as the guest OS inside a VM. Customers can start with the latter scenario today. In addition SAP will support production systems already during the FCS phase when using Windows 2008 ( R2 ) on top of WS2012 Hyper-V.

The SAP notes mentioned above are asking FCS customers to give feedback about configuration and experiences. The process how to do this is described in the SAP notes as well.

We would like to emphasize this important point and encourage every FCS customer to do this. All the information will be collected and best practice guidance will be derived from it for the benefit of the whole WS2012 Hyper-V community. Thanks in advance for your help.

Further information related to SAP on Hyper-V can be found in the following SAP notes :

Miele( household appliances ) is our first customer who went live with virtualized SAP applicationservers of one of their most important SAP systems running on WS2012 Hyper-V and guest OS Windows 2008 R2 inside the VMs.